Here are the data structures with brief descriptions:

[detail level 12]

otActiveScanResult
otBorderRouterConfig
otBufferInfo
otChildInfo
otCliCommand
otCoapHeader
otCoapOption
otCoapResource
otCommissioningDataset
otDhcpAddress
otDnsQuery
otEidCacheEntry
otEnergyScanResult
otExtAddress
otExtendedPanId
otExternalRouteConfig
otIcmp6Handler
otIcmp6Header
OT_TOOL_PACKED_FIELD
otIp6Address
OT_TOOL_PACKED_FIELD
otIp6Prefix
otIpCounters
otLeaderData
otLinkModeConfig
otMacCounters
otMacFilterEntry
otMasterKey
otMeshLocalPrefix
otMessage
otMessageInfo
otMessageQueue
otNcpLegacyHandlers
otNeighborInfo
otNetifAddress
otNetifMulticastAddress
otNetworkName
otOperationalDataset
otPSKc
otRadioFrame
otRouterInfo
otSecurityPolicy
otSemanticallyOpaqueIidGeneratorData
otServerConfig
otServiceConfig
otSockAddr
otSteeringData
otThreadLinkInfo
otUdpSocket
PlatformFemConfigPaLna	Configuration parameters for the PA and LNA
PlatformFemConfigParams	PA & LNA GPIO toggle configuration
PlatformSoftdeviceRaalConfigParams	RAAL Softdevice configuration parameters